I had some problems _____ my homework.

The second Sunday of May is _______ Mother’s Day, it’s _______ special day for children to show their love to their dear mums.

I can play ______ guitar, and I usually play it on ______ weekends.

When shall we start?—Let’s _____ the time for the trip. What about 8:30? Is that all right?

The dish doesn’t taste as ____ as it used to be.—Sorry, I have put a little more salt.